// /src/pages/hot/hot.vue
<template>
  <view class="viewport">
    <!-- 推荐封面图 -->
    <view class="cover">
      <image :src="bannerPicture"></image>
    </view>
    <!-- tab导航栏 -->

    <view class="tabs">
      <text
        class="text"
        @click="activeId = item.id"
        :class="{ active: item.id === activeId }"
        v-for="item in subTypes"
        :key="item.id"
        >{{ item.title }}</text
      >
    </view>
    <!--商品列表 -->
    <!-- 推荐列表 -->
    <scroll-view
      v-for="(type, id) in subTypes"
      :key="id"
      v-show="activeId === type.id"
      scroll-y
      class="scroll-view"
      @scrolltolower="onScrolltolower"
    >
      <view class="goods">
        <navigator
          hover-class="none"
          class="navigator"
          v-for="goods in type.goodsItems.items"
          :key="goods.id"
          :url="`/pages/goods/goods?id=${goods.id}`"
        >
          <image class="thumb" :src="goods.picture"></image>
          <view class="name ellipsis">{{ goods.name }}</view>
          <view class="price">
            <text class="symbol">¥</text>
            <text class="number">{{ goods.price }}</text>
          </view>
        </navigator>
      </view>
      <view class="loading-text">
        {{ item.finish ? "没有更多数据了~" : "正在加载..." }}
      </view>
    </scroll-view>
  </view>
</template>
<script>
import { getRecomendsAPI } from "@/api/home";

//这个变量还可以写成数组方式，不过处理比较麻烦。
const hotMap = {
  1: { title: "特惠推荐", url: "/hot/preference" },
  2: { title: "爆款推荐", url: "/hot/inVogue" },
  3: { title: "一站买全", url: "/hot/oneStop" },
  4: { title: "新鲜好物", url: "/hot/new" },
};

export default {
  data() {
    return {
      currentItem: null,
      title: "",
      bannerPicture: "",
      subTypes: [],
      goodsItems: {},
      activeId: "",
    };
  },
  async onLoad({ type }) {
    //获取动态标题
    this.currentItem = hotMap[type];
    uni.setNavigationBarTitle({ title: this.currentItem.title });
    console.log(this.currentItem, "动态标题");

    //获取商品地址
    const { result } = await getRecomendsAPI(this.currentItem.url);
    const { bannerPicture, subTypes, goodsItems } = result;
    this.bannerPicture = bannerPicture;
    this.subTypes = subTypes;
    this.goodsItems = goodsItems;

    this.activeId = this.subTypes[0].id;
  },
};
// 热门推荐页 标题和url
</script>

<style lang="scss">
page {
  height: 100%;
  background-color: #f4f4f4;
}
.viewport {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 180rpx 0 0;
  position: relative;
}
.cover {
  width: 750rpx;
  height: 225rpx;
  border-radius: 0 0 40rpx 40rpx;
  overflow: hidden;
  position: absolute;
  left: 0;
  top: 0;
}
.scroll-view {
  flex: 1;
}
.tabs {
  display: flex;
  justify-content: space-evenly;
  height: 100rpx;
  line-height: 90rpx;
  margin: 0 20rpx;
  font-size: 28rpx;
  border-radius: 10rpx;
  box-shadow: 0 4rpx 5rpx rgba(200, 200, 200, 0.3);
  color: #333;
  background-color: #fff;
  position: relative;
  z-index: 9;
  .text {
    margin: 0 20rpx;
    position: relative;
  }
  .active {
    &::after {
      content: "";
      width: 40rpx;
      height: 4rpx;
      transform: translate(-50%);
      background-color: #27ba9b;
      position: absolute;
      left: 50%;
      bottom: 24rpx;
    }
  }
}
.goods {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  padding: 0 20rpx 20rpx;
  .navigator {
    width: 345rpx;
    padding: 20rpx;
    margin-top: 20rpx;
    border-radius: 10rpx;
    background-color: #fff;
  }
  .thumb {
    width: 305rpx;
    height: 305rpx;
  }
  .name {
    height: 88rpx;
    font-size: 26rpx;
  }
  .price {
    line-height: 1;
    color: #cf4444;
    font-size: 30rpx;
  }
  .symbol {
    font-size: 70%;
  }
  .decimal {
    font-size: 70%;
  }
}

.loading-text {
  text-align: center;
  font-size: 28rpx;
  color: #666;
  padding: 20rpx 0 50rpx;
}
</style>
